Simpson 261 Series 1

Analog - VOM

Volt-Ohm-Milliammeter

The Simpson 261 is an improved version of the Simpson 260-3.

This model has a rugged, self-shielding, high torque, annular meter movement with

protective diode and mirrored dial. This meter  also has spring backed jewel screws.

 The Simpson 261 has the Taut Band Suspension and a mirrored dial to eliminate parallax errors.

The mirrored dial is standard so the  "M" designation is not used with the series number.

Controls include: Ohms zero adjustment, AC - DC - Select, a 12 position Function / Range

selector switch, and eight recessed probe jacks.

The Simpson 261 has a special calibration circuit to increase it's accuracy.

More inside views linked below.

The batteries used in this model are a single "D" cell, plus four "AA" batteries, there are two "AA"

below the "D" and one "AA" on each side.  The batteries can be installed without 

doing anything but removing the back of the case.

Case Size: 5 " x 7 " x 3"  -  Weight: 3 Pounds

The Adjust-A-View handle can also support the meter in a sloping position for viewing.

Simpson 261 Series 1 Specifications

DC VOLTAGE

Ranges 250mV, 1V, 2.5V, 10V ,25V, 50V, 250V, 500V, 1000V

Accuracy 2% of full scale * Sensitivity 20K per volt

AC VOLTAGE

Ranges 2.5V, 10V, 25V, 50V, 250V, 500V, 1000V

Accuracy 3% of full scale * Sensitivity 5K per volt

Rated Circuit-To-Ground Voltage 1000V (AC or DC) max.

DECIBEL

5 Ranges -20 to +50dB * Reference 0dB= 1mW into 600Ω

DC CURRENT

Ranges 50μA, 1mA, 10mA, l00mA, 500mA, 10A

Accuracy 1.5% full scale 5OμA, 2.0% of full scale, all other

Voltage Drop: (Nominal) 250mV on 50μA , 1mA; 255mV on 10mA , 10A; 300mV on 100mA, 500mV on 500mA

RESISTANCE

Ranges Rx 1, Rx 100, Rx 10K

Accuracy 2.5 of arc on Rx1, 2.0 of arc on other

Maximum Indication 0-2KΩ, 0-200Ω, 0-20MΩ

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